Tribonacci Constant Sweatshirt S-5XL — Math Nerd Graphic Crewneck

Soft, warm, and quietly clever — this crewneck speaks to people who love math jokes, late-night problem solving, and cozy study sessions. The black sweatshirt carries a clean white print that lists the “Tribonacci Constant” and its sequence, so it reads like a secret code among fellow number lovers. Wear it to office whiteboard sessions, math club meetings, or low-key coffee-shop hangs. The classic fit and medium-heavy fabric keep you comfortable through long lectures and brisk walks between classes. Subtle details like a ribbed knit collar and durable double-needle stitching mean this sweatshirt wears well over time, while tear-away labeling prevents scratchy irritation. Choose embroidery placements for a refined touch on chest or wrists, or keep the bold DTG print front-and-center for maximum nerd cred.

Product features
- Made from a 50/50 cotton-poly medium-heavy blend (8.0 oz/yd²) for warmth and durability
- Tubular knit construction with no side seams for reduced fabric waste and a clean look
- Ribbed knit collar and double-needle stitching at stress points for shape retention and long-lasting wear
- DTF inner neck labels and DTG prints; OEKO-TEX® certified dyes and ethically grown US cotton

Care instructions
- Machine wash: cold (max 30C or 90F)
- Non-chlorine: bleach as needed
- Tumble dry: low heat
- Do not dryclean
- Do not iron